JP3540026B2 - Disk drive cartridge ejection mechanism - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a cartridge ejection mechanism for a disk device such as an optical disk device. The term optical disk device used in this specification includes a magneto-optical disk device.
[0002]
2. Description of the Related Art An optical disc has been spotlighted as a core memory medium in the rapidly developing multimedia in recent years, and is usually used in a state of being housed in a cartridge. An optical disk cartridge is loaded into the optical disk device, and data is written / read to / from the optical disk.
[0003]
The optical disk cartridge for which data write or read operation has been completed is automatically ejected from the optical disk device by pressing the eject button. At this time, a cartridge ejection mechanism of the optical disk device that keeps the cartridge ejection amount constant is required. Have been.
[0004]
[Prior art]
In a conventional cartridge ejection mechanism of an optical disc device, a cartridge ejection arm is rotatably provided in a cartridge holder of the optical disc device, and a substantially U-shaped roller groove is formed.
[0005]
A shutter opening / closing roller is mounted so as to run in the roller groove, and a cartridge discharging coil spring whose one end is engaged with the cartridge discharging arm and the other end is engaged with the shutter opening / closing roller is provided.
[0006]
On the other hand, the optical disk cartridge has a shutter that can be opened and closed, and this shutter is usually closed by a shutter spring. When the optical disk cartridge is inserted into the optical disk apparatus, the shutter is automatically opened against the urging force of the shutter spring by being pushed by the shutter opening / closing roller running in the roller groove, and the window is opened to expose the optical disk.
[0007]
The optical disk is mounted on the turntable of the spindle in this window, and the loading of the optical disk cartridge into the optical disk device is completed. While rotating the optical disk at a high speed by the spindle motor, the optical head writes or reads data on the optical disk.
[0008]
When the operator wants to eject the optical disk cartridge from the optical disk device, the operator presses an eject button provided on the front surface of the optical disk device. As a result, the lock of the cartridge is released, and the cartridge discharge arm rotates in the discharge direction.
[0009]
Then, the shutter opening / closing roller is pushed by the urging force of the cartridge ejection coil spring and travels in the roller groove, and is pushed by the shutter opening / closing roller to eject the optical disc cartridge from the inside of the optical disc apparatus.
[0010]
[Problems to be solved by the invention]
When the cartridge is ejected, the shutter of the cartridge is closed by the shutter spring as the shutter opening / closing roller travels in the roller groove, but the urging force of the shutter spring also acts in the cartridge ejection direction due to the shape of the roller groove. there to be added to the urging force of the coil springs and cartridge ejection coil spring cartridge ejection arms, there is a problem that there are cases where the emission amount of the optical disc cartridge is too large.
[0011]
In particular, since there is a variation in the biasing force of the shutter spring for opening and closing the shutter for each manufacturer of the optical disk cartridge, the cartridge discharging mechanism of the optical disk device that obtains a stable cartridge discharge amount in consideration of the biasing force of the shutter spring in advance. Was difficult to design.
[0012]
The present invention has been made in view of such a point, and an object of the present invention is to provide a cartridge ejection mechanism of an optical disc device capable of obtaining a stable ejection speed and ejection amount of a cartridge. .
[0013]
[Means for Solving the Problems]
According to the present invention, when a cartridge is inserted , a cartridge ejecting member including a shutter opening / closing portion that engages with a shutter of a disk cartridge and moves the shutter against a shutter spring, and the cartridge ejecting member is rotatable. Urging means for urging in the cartridge discharging direction, and the cartridge discharging member, which engages with the shutter which is in an open state by the shutter opening / closing unit to prevent the shutter from being temporarily closed when the cartridge is discharged. and a stopper member provided independently, the cartridge ejection mechanism of the disk device, characterized in that discharging the disc cartridge in the disk device is provided.
[0014]
Preferably, the shutter opening / closing unit is provided with a roller groove provided in a cartridge holder, a cartridge discharge spring having one end attached to the cartridge discharge member, and a cartridge discharge spring mounted on the other end of the cartridge discharge spring so as to move in the groove. Shutter opening and closing rollers.
[0015]
[Action]
According to the present invention, when the cartridge is ejected from the optical disk device, the stopper is provided to engage with the opened shutter and prevent the shutter from being temporarily closed, so that the urging force of the shutter spring moves in the cartridge ejecting direction. It is possible to prevent the cartridge from acting, and to obtain a stable discharge speed and discharge amount of the cartridge.
[0016]
When the cartridge is inserted, the stopper member is pushed away by the cartridge so as not to hinder the insertion of the cartridge, so that the optical disk cartridge can be inserted smoothly.
[0017]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view of an embodiment of the present invention. A bias magnet mounting member 4 for mounting a bias magnet is provided on a cartridge holder 2 of an optical disk device. The cartridge holder 2 is further provided with a substantially U-shaped roller groove 6 in which a shutter opening / closing roller 8 runs.
[0018]
Reference numeral 10 denotes a stopper member for preventing a shutter of an optical disk cartridge described later in detail from being temporarily closed through an opening 9 formed in the cartridge holder 2, and acts when the cartridge is ejected from the optical disk apparatus.
[0019]
Referring to FIG. 2, there is shown a rear view when the optical disk cartridge is inserted into the cartridge holder of the optical disk device. Reference numeral 12 denotes an optical disk cartridge, which is configured so that an optical disk medium 14 is rotatably accommodated in a cartridge case 13.
[0020]
A shutter 16 is normally urged by a coiled shutter spring 18 to close the shutter 16. One end 18 a of the shutter spring 18 is engaged with the cartridge case 13, and the other end 18 b is engaged with the shutter 16. A shutter opening / closing member 26 is integrally attached to a tip of the shutter 16.
[0021]
An L-shaped cartridge discharge arm 20 is attached to the cartridge holder 2 of the optical disk device so as to be rotatable about a shaft 22 as a rotation center. The cartridge discharge arm 20 is urged clockwise by a coil spring 23 attached to a shaft 22. Reference numeral 24 denotes a coil-shaped cartridge discharge spring, one end of which is engaged with the cartridge discharge arm 20 and the other end of which is engaged with the shutter opening / closing roller 8.
[0022]
As shown in FIG. 2, when the optical disk cartridge 12 is inserted into the cartridge holder 2 of the optical disk device, the shutter opening / closing roller 8 moves in the roller groove 6 to the rear side against the urging force of the cartridge discharge spring 24. Pressed.
[0023]
At the same time, the movement of the shutter opening / closing roller 8 pushes the shutter opening / closing member 26 against the urging force of the shutter spring, so that the shutter 16 opens, the window 17 opens, and the optical disk medium 14 is exposed.
[0024]
When the optical disk cartridge 12 is further pushed in, the shutter 16 is fully opened as shown in FIG. 3, the shutter opening / closing roller 8 falls into the notch 28 provided in the cartridge case 13, and the lock member 30 projects so that the cartridge discharge arm 20 is locked in the state shown in FIG.
[0025]
In this state, the shutter discharge spring 24 is deformed into a shape as shown in FIG. Further, the stopper member 10 is engaged with the edge of the shutter 16 which is fully opened.
[0026]
With the shutter 16 fully opened as shown in FIG. 3, the optical disk medium 14 is mounted on the turntable of the spindle of the optical disk device and chucked. While the optical disk medium 14 is rotated at a high speed by a spindle motor, data is written / read to / from the optical disk medium 14 by an optical head.
[0027]
When the user wants to eject the cartridge, the user presses an eject button provided on the front surface of the optical disk device. As a result, the engagement between the lock member 30 and the cartridge discharge arm 20 is released, so that the cartridge discharge arm 20 is rotated clockwise by the urging force of the coil spring 23, and the shutter opening / closing roller 8 is accordingly moved by the cartridge discharge spring. The roller runs in the roller groove 6 while being pressed by 24.
[0028]
When the shutter opening / closing roller 8 runs in the roller groove 6, the optical disc cartridge 12 is pushed by the shutter opening / closing roller 8 and is ejected from the inside of the cartridge holder 2.
[0029]
At this time, in this embodiment, the shutter 16 cannot be closed while the optical disk cartridge 12 is ejected to a certain position because the stopper member 10 is engaged with the edge of the shutter 16 that is fully opened.
[0030]
As a result, the urging force of the shutter spring 18 does not act on the ejection direction of the cartridge when the optical disc cartridge 12 is ejected, and the optical disc cartridge 12 is stably ejected by the urging force of the cartridge ejection spring 24.
[0031]
When the optical disk cartridge 12 is ejected to a predetermined position, the engagement between the stopper member 10 and the shutter 16 is released, and the shutter 16 is closed. Therefore, when the disc is completely ejected from the optical disc holder 2, the shutter 16 of the optical disc cartridge 12 is in a closed state.
[0032]
As shown in FIG. 4A, the stopper member 10 is made of a sheet metal having elasticity. Alternatively, as shown in FIG. 4B, a stopper member 10 'in which a resin mold projecting portion 10b is bonded to or integrally formed with a sheet metal 10a can be employed.
[0033]
Since the stopper member 10 or 10 'is attached to the cartridge holder 2 so as to be elastically deformable in this manner, the shutter 16 is closed when the cartridge is inserted, so that the stopper member 10' is pushed against the shutter 16 as shown in FIG. The stopper member 10 'does not hinder the insertion of the optical disk cartridge 12 into the optical disk device.
[0034]
When the cartridge is ejected, since the shutter 16 is fully open, the stopper member 10 'engages with the edge of the shutter 16 as shown in FIG. 6, and the shutter 16 is temporarily prevented from closing.
[0035]
As a result, the biasing force of the shutter spring 18 does not act in the cartridge discharging direction as described above, and the optical disk cartridge is discharged in a stable state by the biasing force of the cartridge discharging spring 24.
[0036]
【The invention's effect】
As described in detail above, the present invention is configured to prevent the urging force of the shutter spring from acting in the cartridge discharging direction when the cartridge is discharged, so that the effect of stabilizing the discharging force of the optical disk cartridge can be achieved. Play.
[Brief description of the drawings]
FIG. 1 is a plan view of an embodiment of the present invention.
FIG. 2 is a rear view when a cartridge is inserted.
FIG. 3 is a rear view showing a state where the cartridge is completely inserted.
FIG. 4 is a perspective view of a stopper member.
FIG. 5 is a partially cutaway perspective view when a cartridge is inserted.
FIG. 6 is a partially cutaway perspective view when the cartridge is ejected.
[Explanation of symbols]
2 Cartridge holder 6 Roller groove 8 Shutter opening / closing roller 10, 10 'Stopper member 12 Optical disk cartridge 14 Optical disk medium 16 Shutter 17 Window 18 Shutter spring 20 Shutter discharge arm 24 Shutter discharge spring

Claims (5)

A cartridge ejecting member including a shutter opening / closing portion that engages with a shutter of a disk cartridge and moves the shutter against a shutter spring when the cartridge is inserted;
Urging means for urging the cartridge discharge member rotatably in the cartridge discharge direction ;
When the cartridge is ejected, the shutter opening / closing unit engages with the shutter in an open state to prevent the shutter from being temporarily closed, and includes a stopper member provided independently of the cartridge ejection member .
Cartridge ejection mechanism of the disk device, characterized in that discharging the disc cartridge in the disk device. The shutter opening and closing unit, a roller groove provided in the cartridge holder,
A cartridge ejection spring having one end attached to the cartridge ejection member, a shutter opening / closing roller attached to the other end of the cartridge ejection spring so as to move in the groove,
2. The cartridge ejecting mechanism for a disk drive according to claim 1, further comprising: 3. The cartridge ejection mechanism for a disk device according to claim 1, wherein the stopper member is attached to the cartridge holder so as to be able to protrude and retract from an opening provided in the cartridge holder of the optical disk device. 4. The disk drive according to claim 3, wherein the stopper member is elastically attached to the cartridge holder so as to be pushed away by the cartridge so as not to hinder the insertion of the cartridge when the cartridge is inserted. Cartridge ejection mechanism. The stopper member is attached to a position where the engagement with the shutter is released when the shutter opening / closing roller is moved to near the end of the roller groove when the cartridge is ejected. 5. The cartridge discharging mechanism of the disk device according to any one of 1 to 4.

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